#include<iostream>

int stonetolb(int sts);


int main(){
    using namespace std;
    int stone;
    cout << "输出单位为吨的重量:";
    cin >> stone;
    int pounds = stonetolb(stone);
    cout << stone << " stones = ";
    cout << pounds << " pounds." << endl;
    return 0;
}

int stonetolb(int sts){
    return 14 * sts;
}